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PatentedAug. 23, I898.

C. S. SHARP.

KNOT TYING DEVICE FOR GRAIN BINDERS.

(Application filed Jan 11, 1897 2 Sheets-Sheet I.

(No Model.)

m m m m mm Patented Aug. 23, I898.

C. S. SHARP.

K NOT TYING DEVICE FOR GRAIN BINDERS.

(Application filed m. 11, 1897.)

2 Sheets-Sheet 2 (No Model.)

will!!! .llrlltri llm v v A llwrrnn STATES CHARLES S. SHARP, OE AUBURN, NEW YORK, ASSIGNOR TO THE D. M. OSBORNE & COMPANY, OF SAME PLACE.

KNOT-TYING DEVICE? FOR GRAIN-BINDERSl SPECIFICATION forming part of Letters IiatentNo. 609,522, dated August 23, 1898. Application filed January 11, 1897 Serial No. 618,720. (lilo model.)

To aZZ whom it may concern:

Be it known that I, CHARLES S. SHARP, of Auburn, in the county of Cayuga and State of New York, have invented an Improvement in Knot Tying Devices for Grain Binders, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to knot-tying devices for grain-binders, and has for its object to improve the construction of the same, to the end that the cord while yet held in a good and sufficient manner by the cord-holder may more easily render to the knot-tying bill during the knot-tying operation; and my improvement is of particular importance when irregular or lumpy cord is used, as such cord may like wise easily render from the cord-holder during the knot-tying operation without undue strain upon the parts and without binding or cutting the corc Prior to this invention the cord-holder has usually been so disposed as to face the knottying bill, and the cord held by said cord holder is withdrawn more or less, as required, during the tying operation but with the parts so disposed the strain or pull upon the cord is at or nearly at right angles to the movement of the cord-holding plate away from the cord-holding disk When yielding for the delivery of the cord, and by reason of such right-angular or lateral strain upon said cordholding plate it will bind more or less and not easily yield, and in case irregular or lumpy cord is drawn into the cord-holder the excess. ive pull or strain required to withdraw it only increases this binding action and lessens the ease or freedom of motion of said cord-holding plate, and as a consequence the cord will break or its delivery will be so retarded as to cause trouble.

In accordance with this invention I have set the cord-holder edgewise to the knot-t-ying bill by arranging the spindles of both the cord-holding disk and the knot-tying bill so as to turn on axes radial to the main operating-shaft of the knotter, and have pivoted the cord-holding plate,which cooperates with said cord-holding disk, to the frame at one side of said disk, and have provided a spring which bears upon said plate, so that it is free to yield toward and from the cord-holding disk, and said yielding cord-holding plate is located on that side of said cord-holding disk adjacent the knot-tying bill, so that the cord which passes from the cord-holder passes directly over said plate to the knot-tying bill substantially at right angles to the axis of the spindles, and withthe parts so disposed any strain on said cord sufficient toovercome the pressure of the spring will cause said plate to yield or turn on its pivot or move toward the knot-tying bill,which is in a direction corresponding to the strain or pull upon the cord, and hence in a direction to most easily turn said plate.

The cord-holding plate embraces a seg= mental portion of the disk between the spindle of said disk and the knot-tying bill, and

that portion of the edge of said plate along which the cord runs as the disk turns lies substantially parallel to the knotter-shaft, so that as said disk is turned no cord whatever will render toward the bill and all cord used in forming the knot will be drawn from between the plate and disk which holds it.

' Figure 1 shows a rear elevation of a knottying device embodying this invention; Fig. 2, a detail of the cord-holder; Fig. 3, adetail showing the relative positions of the parts and cord while the bundle is being formed;

Fig. i, a similar view showing the cord in position to be tied; 1 Fig. 5, a similar detail showing the knot half formed and cord fully in holder, and Fig. 6 shows the knot prior to stripping it from the knot-tying bill.

The knot-tying shaft A and cam A secured to it, which is constructed and arranged to serve as an actuator for the cooperative parts, together with the frame and the spindles a 19, having their bearings in said frame radial to the axis of said shaft A, the knot-tying bill a, secured to the radial spindle a, and the cord-holding disk 17, secured to the radial spindle h, are'all of usual or suitable construction, and said parts being disposed with the spindles Ct 19 radial to the axis of theshaft A it will be seen that the cord-holding disk b is set edgewise to the knot-tying bill. The cord-holding plate 0, curved longitudinally and having a groove of suitable depth and Width formed along one edge, is pivoted to the frame at c and is held pressed into en gagement with the cord-holding disk 6 by means of a strong flat spring 0 which is attached to the frame. This pivoted cord-holdin g plate 0 is located upon that side of the cord-holding disk adjacent the knot-tying bill, so that its own movement on its pivot toward and from the cord-holding disk is toward and from said knot-tying bill.

The cord-holding plate 0 embraces a segmental portion of the disk between the spindle of said disk and the knot-tying bill, and that portion of the edge of said plate along which the cord runs as the disk turns lies substantially parallel to the knotter-shaft or at right angles to a plane intersecting the spindles of the knot-tyingbill and disk. The cord (Z, which is delivered from the cordholder, (which consists of the cord-holding disk and cord-holding plate,) passes directly over the plate 0 and thence to the knot-tying bill, being drawn substantially at right a11- gles to the spindles, and any pull or strain upon this cord will cause the cord-holding plate to turn on its pivot or yield in a direction toward the knot-tying bill, in which direction it can most easily be turned without binding. With the parts disposed as herein shown, if irregular or lumpy cord should be drawn into the cord-holder it will render freely without binding or straining the parts, as the cord-holding plate is free to yield in a direction corresponding to the pull or strain upon the cord.

I am aware that a cord-holder has heretofore been set edgewise to the knot-tying bill, so that the cord delivered from said cordholder would pass over the cord-holding plate to the knot-tying bill in a direction substantially at right angles to the axis of the cordholding disk; but the parts were so constructed and arranged that the cord was rendered to the knot-tying bill by the turning of the disk, whereas in the present case the cord is not rendered by the turning of the disk, but is drawn from between the disk and plate during the knot-tying operation by the knottying bill.

- The spring 0 pressing upon the cord-holding plate, is broadened at its lower end, and its broadened portion is formed with a curved upper edge, which serves as a guide for the cord. After the knot is tied and the cord severed if the knife-arm should not return to its normal position quickly there is liability of the cord placed by the needle for the next bundle being carried under the knotter by the back of the knife-blade; but by the provision thus made the cord is held upon the upper partof the curved guide until the knifearm swings back into place, when the pressure of the accumulating grain on the cord causes it to slip down over the end of the spring, drawing it with certainty within the travel of a tooth of the disk.

In Fig. 6 the needle is supposed to be at the full limit of its forward movement, the knotter-bill is in position to have the knot stripped from it, and the knife-carrying arm just ready to give the swing that will result in the cutting of the twine. In said figure the twine which passes under the disk I) is from the eye of the needle, and it is carried to a point where it will be caught by the notched disk and spring-holder when the needle returns to its normal position. When the knife-arm swings so that the knife cuts the cord, the part 19 thereof moves directly across the path of the needle and holds up the twine until the knife-arm swings back into position,when the twine drops down into the position shown in the loop of the knife-arm.

I claim- 1. In a knot-tying device for grain-binders, a knot-tying bill and a cord-holding disk, turning on axes radial to the knotter-shaft, a movable cord-holding plate embracing a segmental portion of said disk between the spindle of said disk and the knot-tying bill, a spring bearing upon it, that portion of the edge of said plate along which the cord runs, as the disk turns, occupying a position substantially parallel to the knotter-shaft, whereby the cord used in making a knot is pulled from the cord-holder by the knot-tying bill without rotating the holding-disk, substantially as described.

2. In a knot-tying device for grain-binders, a knot-tying bill and a cord-holding disk, turning on axes radial to the knotter-shaft, and a movable cord-holdin g plate embracing a segmental portion of said disk between the spindle of said disk and the knot-tying bill, a spring bearing upon it, the edge of said plate along which the cord runs as the disk turns and over which the cord is drawn by the bill in forming the knot, occupying a position substantially at right angles to a line intersecting the spindles of said disk and bill, substantially as described.

3. In a knot-tying device for grain-binders, a knot-tying bill and a cord-holding disk, turning on axes radial to the knotter-shaft, and a movable cord-holding plate embracing a segmental portion of said disk between the spindle of said disk and the knot-tying bill, a spring bearing upon it having a curved guide for the cord near the cord-holding plate, the edge of said plate along which the cord runs as the disk turns and over which the cord is drawn by the bill in forming the knot, occupying a position substantially at right angles to a line intersecting the spindles of said disk and bill, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES S. SHARP.

Witnesses:

RAYMOND M. ATHERLY, FRED M. EVERETT. 

